<template>
  <view class="my-settle-container">
    <!-- 全选 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
    </label>
    
    <!-- 合计 -->
    <view class="amount-box">
      合计:<text class="amount">￥{{ checkedGoodsAmount }}</text>
    </view>
    
    <!-- 结算按钮 -->
    <view class="btn-settle" @click="settlement">结算({{ checkedCount }})</view>
  </view>
</template>
<script>
  import { mapGetters, mapMutations, mapState } from 'vuex'

  export default {
    data() {
      return {
        // 倒计时的秒数
        seconds: 3,
        // 定时器的 id
        timer: null
      }
    },
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
      ...mapGetters('m_user', ['addstr']),
      ...mapState('m_user', ['token']),
      ...mapState('m_cart', ['cart']),
      isFullCheck() {
        return this.total === this.checkedCount
      },
      generateOrderNumber() {
        const now = new Date();
        const year = now.getFullYear().toString().slice(-4);
        const month = (now.getMonth() + 1).toString().padStart(2, '0');
        const day = now.getDate().toString().padStart(2, '0');
        const timestamp = now.getTime().toString().padStart(12, '0');
      
        return `HMDD${year}${month}${day}${timestamp}`;
      }
    },
    methods: {
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      ...mapMutations('m_user', ['updateRedirectInfo']),
      changeAllState() {
        this.updateAllGoodsState(!this.isFullCheck)
      },
      // 用户点击了结算按钮
      settlement() {
        if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')

        if (!this.addstr) return uni.$showMsg('请选择收货地址！')

        // if (!this.token) return uni.$showMsg('请先登录！')
        if (!this.token) return this.delayNavigate()

        this.payOrder()
      },
      // 由于无法获取到真实的 token，所以无法通过黑马的接口，因此也无法获取数据
      // 所以这里进行一个模拟操作，创建的数据和信息为自定义的
      async payOrder() {
        // 1. 创建订单
        // 1.1 组织订单的信息对象
        const orderInfo = {
          order_price: this.checkedGoodsAmount,
          consignee_addr: this.addstr,
          goods: this.cart.filter(x => x.goods_state).map(x => ({
            goods_id: x.goods_id,
            goods_number: x.goods_number,
            goods_price: x.goods_price
          }))
        }

        // 1.2 发起请求创建订单
        // const {data: res} = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)

        // 1.3 自定义订单编号
        const orderNumber = this.generateOrderNumber
        // console.log(orderInfo, orderNumber)

        uni.$showMsg('抱歉，暂时无法实现该功能！')
      },
      // 展示倒计时的提示消息
      showTips(n) {
        uni.showToast({
          icon: 'none',
          title: '请登录后再结算：' + n + '秒之后自动跳转到登录页',
          mask: true,
          duration: 1500
        })
      },
      // 延时导航到 my 页面
      delayNavigate() {
        this.seconds = 3

        this.showTips(this.seconds)

        this.timer = setInterval(() => {
          this.seconds--

          if (this.seconds <= 0) {
            clearInterval(this.timer)

            uni.switchTab({
              url: '/pages/my/my',
              success: () => {
                this.updateRedirectInfo({
                  openType: 'switchTab',
                  from: '/pages/cart/cart'
                })
              }
            })

            return
          }

          this.showTips(this.seconds)
        }, 1000)
      }
    }
  }
</script>
<style lang="scss">
.my-settle-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: white;
  z-index: 999;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
}

.radio {
  display: flex;
  align-items: center;
}

.amount-box {
  .amount {
    color: #C00000;
    font-weight: bold;
  }
}

.btn-settle {
  background-color: #C00000;
  height: 50px;
  color: white;
  line-height: 50px;
  padding: 0 10px;
  min-width: 100px;
  text-align: center;
}
</style>
